cubicweb-tracker #2063772 update to cw 3.14 api: iprogress [resolved]

use iprogress cube extracted from cw

prioritynormal
typeenhancement
done in1.10.0
load0.100
load left0.000
closed by#51cfb2386cc3 update to 3.14 api: iprogress moved to its own cube. Closes #2063772